7. GCE Kannur 7
Cement OPC 53 grade
River sand
Coconut shell aggregate
8mm to 16mm size
(From local homes, hostels,..)
Crushed granite stone
20 mm
Potable drinking water
MATERIALS
8. GCE Kannur 8
METHEDOLOGY ADOPTED
Determination of engineering
properties of CS
Determination of properties of
conventional aggregates
Casting M20 mix concrete
Testing, Analysis & Results
Documentation
Conclusion
9. GCE Kannur 9
To evaluate the engineering properties of
coconut shell aggregate.
To compare the properties of coconut shell
aggregate with conventional aggregate.
MINI PROJECT OVERVIEW
10. GCE Kannur 10
PROPERTIES TESTED
Specific gravity
Void ratio
Bulk density
Porosity
Aggregate impact value
Aggregate crushing value
Abrasion value
Fineness modulus
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Tests
Convention
al aggregate
Coconut
shell aggregate
Sand
Max size 20 16 4.75
Specific gravity 2.82 1.29 1.1
Bulk density(kg/l) 1.51 0.681
Void ratio 0.866 0.894
Porosity (%) 46.4 47.2
Aggregate abrasion value 27 4.66 -
Impact value of aggregate (%) 21.114 5.51 -
Aggregate crushing value (%) 2.6 5.28 -
Fineness modulus 0.915 1.415 2.83
PROPERTIES AT A GLANCE
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MIX DESIGN
Mass of cement (in kg/m3) 383
Mass of water (in kg/m3) 191.6
Mass of fine aggregate (in kg/m3) 626.36
Mass of coarse aggregate (in kg/m3) 1200.8
Mix ratio 1: 1.635: 3.135
17. FLEXURAL STRENGTH
Modulus of rupture, fct =
PL
bd2 ……………… (1)
fct =
3Pa
b
……………… (2)
17
If a > 200, eqn 1
If 170 < a < 200, eqn 2
18. SPLIT TENSILE STRENGTH
Circular disc subjected to compression load
diametrically
F =
2P
𝜋DL
Where,
L = Length of cylinder
D = Diameter of cylinder
P = Maximum load
18
38. Fig 6.6 : 28 days flexural strength
38
Compressivestrength(N/mm2)
39.
40.
41. GCE Kannur 41
The optimum replacement is obtained as 15%
CONCLUSION
Can be used as coarse aggregate in the
production of lightweight concrete
42. GCE Kannur 42
1. E. A. Olanipekun, K. O. Olusola ,and O. Atia, “Comparative study between palm
kernel shell and coconut shell as coarse aggregate”, Journal of Engineering and
Applied Science, Asian Research Publishing Network. Japan, 2005.
2. U. O. Kabiru, and A. Saleh, “Exploratory study of coconut shell as coarse
aggregate in concrete”, Journal of engineering and applied sciences, Vol. 2,
December 2010.
3. K. Gunasekaran, and P. S. Kumar, “Lightweight Concrete using Coconut Shells as
Aggregate”, Proceedings, International Conference on "Innovations in Building
Materials, Structural Designs and Construction Practices (IBMSDCP-2008), 15-17
May 2008, pp.375-382.
4. K. Gunasekaran, “Utilization of Coconut Shell as Coarse Aggregate in the
Development of Lightweight Concrete”, PhD Thesis, Department of Civil
Engineering, SRM University, Kattankulathur, 2011.
5. C. B. Gopal, and K. B. Ranjan, “Effect of Coconut Shell Aggregate on Normal
Strength Concrete”, International Journal of Engineering Research & Technology,
Vol. 2 Issue 6, June – 2013, pp: 2405 -2415.
6. Y. Amarnath, and C. Ramachandrudu, “Properties of Concrete with Coconut Shells
as Aggregate Replacement”, International Journal of Engineering Inventions,
Volume 1, Issue 6 (October 2012), pp: 21-31.
7. U. Johnson Alengaram, Baig Abdullah Al Muhit, and Mohd Zamin bin Jumaat,
“Utilization of oil palm kernel shell as lightweight aggregate in concrete”,
Construction and Building Materials, Volume 38, January 2013, Pages 161-172.
REFERENCES